The A8-H air quality detector is capable of detecting PM2.5, PM10, PM1.0, carbon dioxide, and the sensors used for aldehyde, TVOC, temperature and humidity functions are all mainstream industrial grade, using 2.8TFT color LCD display screen with adjustable backlight brightness; supports real-time data display and every a bar chart displaying the minute average data, supporting automatic storage and viewing of historical data on a scheduled basis; Switching function between Celsius and Fahrenheit ; Can be set to automatically shut down; Built in 6 languages: Chinese, English, Japan, South Korea, Russia, Germany. Can store 96000 pieces of data, with a built-in 2500mAh lithium battery. Features: 1. 2.8 inch LCD HD color display. 2. Display the current real-time air and temperature and humidity values, curve interface. 3. Data saving function (can store 96,000 pieces of data, only on the instrument to view), set timing storage, delete data, view historical data. (Press the left button MODE to enter the system operation). 4. Display brightness adjustment 5% -100% (press the left button MODE to enter the system adjustment). 5. Celsius and Fahrenheit switch, (long press the key / to switch). 6. Support 6 languages, Chinese, English, Japanese, Korean, Russian, German (left button MODE to enter the system to switch languages). 7. USB (mini) interface DC5V/1A charging; 8. Powered by a 2500mah polymer lithium battery, it has a dual protection circuit for overcharging and overcurrent, and can be recharged repeatedly. Specifications: Model: A8-H Material: ABS Color: Grey Power Supply: 5V/1A Display Method: 2.8-inch TFT full-color LED backlit LCD screen PM2.5 Measurement Range: 0~1000ug/m³ (Standard value), 1000ug/m³ The above is subject to actual measurement Carbon Dioxide Measurement Range: 400~5000ppm TVOC Measurement Range: 0.00mg/m-2.50mg/m³ HCHO Measurement Range: 0.00mg/m³-2.50mg/m³ Formaldehyde Measurement Range: 0.00mg/m³~5.00mg/m³ / 0ppm to 5ppm Temperature Measurement Range: -9~55 Humidity Measurement Range: 0%RH~100%RH Lithium Battery Capacity: 2500mAh Standard Charging Voltage: 5.0±0.5V Display Screen Size: 43.2 * 57.6mm Display Resolution: 240 (3RGB) * 320 Working Environment: -9~55, 90%RH Item Size: 180 * 75 * 32mm / 7.08 * 2.95 * 1.25in Item Weight: 206g / 7.26oz Package Weight: 338g / 11.92oz Package Size: 22.2 * 13 * 4cm / 8.74 * 5.12 * 1.57in Package List: 1 * Air Quality Detector 1 * USB Charging Cable 1 * User Manual (English)